Optimization of [Amim]Cl Pretreatment Conditions for Maximum Glucose Recovery from Hybrid Pennisetum by Response Surface Methodology

BioResources

Guihua Yang¹  Feng Xu¹  Tingting You²  Jiachuan Chen³  Shengdan Wang⁴ 

[1] China;Key Lab of Pulp & Paper Science and Technology of Education Ministry of China;Beijing Forestry University;Qilu University of Technology;

关键词: Hybrid Pennisetum;    Pretreatment;    Ionic liquids;    Central composite design;    Optimization;    Response surface methodology;   

DOI  :  10.15376/biores.10.4.7021-7037

来源: DOAJ

【 摘 要 】

Because of a complex chemical ultra-structure of lignocellulosic biomass, pretreatment is a necessary step for its conversion into bio-ethanol. In the present study, pretreatment conditions using the ionic liquid (IL) 1-allyl-3-methylimidazolium chloride ([Amim]Cl) were optimized for a relatively new model energy crop, hybrid Pennisetum (P. americanum × P. purpureum) to maximize the yield of fermentable sugars (glucose). The design of experiment programs employed a central composite design (CCD), with variables of temperature (102 to 187 °C), retention time (0.5 to 5.5 h), and solids loading (2 to 15 wt%). These factors were further optimized using response surface methodology (RSM). The proposed quadratic model to predict the glucose recovery from hybrid Pennisetum was verified by variance analysis (ANOVA). The model displayed high F and R2 values, indicating that it could be successfully used to identify the relationship among the independent variables studied. A maximum glucose recovery of 72.2% was found with temperature conditions of 139 °C, 2.97 h retention time, and 9.1 wt% solids loading.

【 授权许可】

Unknown